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三价钴配合物高效催化CO2与环氧烷烃偶合反应的机理性探讨
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利用生物转化制备芳香羟胺:反应体系的pH、温度和时间对反应选择性的影响
三价钴配合物高效催化CO2与环氧烷烃偶合反应的机理性探讨
Release time:2019-03-10
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会议论文
First Author:
任伟民
Co-author:
吕小兵
Date of Publication:
2012-10-15
Document Type:
A
Page Number:
1-2
Key Words:
二氧化碳;环氧烷烃;偶合反应;环状碳酸酯;聚碳酸酯;三价钴配合物;协同催化;立构规整性
Abstract:
二氧化碳与环氧烷烃偶合形成有机碳酸酯是最有潜力的绿色反应过程之一[1].取决于催化剂结构、反应温度、压力和环氧烷烃,可形成环状碳酸酯或聚碳酸酯.若将手性引入催化体系的设计中,则可能形成光学活性产物.2004 年,我们报道率先报道:利用基于手性salenCo(Ⅲ)配合物的双组分催化剂,通过催化动力学拆分方法,第一次实现了由外消旋环氧烷烃直接合成出光学活性的环状碳酸酯(图1)[2].
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